ruby-on-rails – Rails – 由于“libMagickCore.5.dylib”而无

rake aborted!
dlopen(/Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/RMagick2.bundle,9): Library not loaded: /usr/local/lib/libjpeg.8.dylib
  Referenced from: /usr/local/opt/imagemagick/lib/libMagickCore.5.dylib
  Reason: Incompatible library version: libMagickCore.5.dylib requires version 13.0.0 or later,but libjpeg.8.dylib provides version 12.0.0 - /Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/RMagick2.bundle
/Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/rmagick.rb:11:in `require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/rmagick.rb:11:in `<top (required)>'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:68:in `require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:66:in `each'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:66:in `block in require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:55:in `each'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:55:in `require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler.rb:128:in `require'
/Users/adam/rubydev/app-staging/config/application.rb:13:in `<top (required)>'
/Users/adam/rubydev/app-staging/Rakefile:5:in `require'
/Users/adam/rubydev/app-staging/Rakefile:5:in `<top (required)>'
/Users/adam/.rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `eval'
/Users/adam/.rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `<main>'
(See full trace by running task with --trace)

我整个下午都在寻找一个问题以及如何解决它,但没有成功.

有问题的部分在这里：

Referenced from: /usr/local/opt/imagemagick/lib/libMagickCore.5.dylib
  Reason: Incompatible library version: libMagickCore.5.dylib requires version 13.0.0 or later,but libjpeg.8.dylib provides version 12.0.0 - /Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/RMagick2.bundle

如何在OS X Lion上升级libMagickCore.5.dylib？

先感谢您

编辑：重新安装imagemagick后我运行了rake db：create并得到：

rake db:createrake aborted!
dlopen(/Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/RMagick2.bundle,9): Library not loaded: /usr/local/opt/imagemagick/lib/libMagickCore.5.dylib
  Referenced from: /Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/RMagick2.bundle
  Reason: image not found - /Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/RMagick2.bundle
/Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/rmagick.rb:11:in `require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/lib/rmagick.rb:11:in `<top (required)>'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:68:in `require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:66:in `each'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:66:in `block in require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:55:in `each'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler/runtime.rb:55:in `require'
/Users/adam/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.2/lib/bundler.rb:128:in `require'
/Users/adam/rubydev/app-staging/config/application.rb:13:in `<top (required)>'
/Users/adam/rubydev/app-staging/Rakefile:5:in `require'
/Users/adam/rubydev/app-staging/Rakefile:5:in `<top (required)>'
/Users/adam/.rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `eval'
/Users/adam/.rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `<main>'
(See full trace by running task with --trace)